The San Diego County district attorney's office says the detective acted in self-defense in firing at a car containing 27-year-old Jennifer Lynn Favreau of Escondido.

The San Diego Union-Tribune says results of the DA's investigation were released Friday.

Favreau had tipped police that her boyfriend had stolen a car. She was in the car when police tried to arrest Christopher Ramirez in October 2009. The DA's report says Ramirez hit a patrol car and then sped toward police, causing a detective to fire. Only Favreau was hit.

Ramirez was arrested after ramming another car. He got 10 years after pleading guilty to assault with a deadly weapon.